acetous

I am of this opinion, because the acid can only be formed at the expense of a little of the spirit, which is one of the principles of the acetous acid.

From The Art of Making Whiskey So As to Obtain a Better, Purer, Cheaper and Greater Quantity of Spirit, From a Given Quantity of Grain by C. M.

Vin′egar-cru′et, a glass bottle for holding vinegar; Vinegarette′, a vinaigrette; Vin′egar-plant, the microscopic fungus which produces acetous fermentation—found in two forms known as mother of vinegar and flowers of vinegar.—adjs.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

Heartburn originates from the inactivity of the stomach, whence the aliment, instead of being subdued by digestion, and converted into chyle, runs into fermentation, producing acetous acid.

From Zoonomia, Vol. II Or, the Laws of Organic Life by Erasmus Darwin

The act of making acetous or sour; the process of converting, or of becoming converted, into vinegar.

From Webster's Unabridged Dictionary by Noah Webster

Everything should be perfectly sweet and clean, and a strict supervision kept up, that the laborers do not drop any crumbs of bread, &c., among the grapes, as this will immediately cause acetous fermentation.

From The Cultivation of The Native Grape, and Manufacture of American Wines by George Husmann